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Найденный: 60 Экземпляр 0.001 sn
Устойчивое развитие ООН : Чистая вода и санита ... ✕
Коллекция [3]
Ученые [29]
Устойчивое развитие ООН [11]
Факультет / Институт [6]
Вид публикации [3]
Год публикации [8]
Язык [2]
Источник [35]
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Чистая вода и санитарные условияОбеспечение доступных для всех услуг по воде и водоотведению и обеспечение устойчивого управления водными ресурсами
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Superabsorbent hydrogels based on N,N-dimethylacrylamide and maleic acid for applications in agriculture as water purifier and nitrogen carrier

Nahit AKTAŞ

To reduce water pollution caused by fertilizers in agricultural irrigation, highly swelling crosslinked hydrogels (p(DMAAm-co-MA) or DM1) based on N,N-dimethylacrylamide (DMAAm) and maleic acid (MA) were prepared using a chemical initiator with the redox polymerization technique. Negative and positive surface modifications of DM1 were achieved using hydrochloric acid (HCl) (p(DMAAm-co-MA)/HCl or DM2) and sodium hydroxide (NaOH) (p(DMAAm-co-MA)/NaOH or DM3), respectively. The synthesized hydrogels were named DM1, DM2 and DM3, respectively. The swelling properties, urea sorption and urea release ...Более

Статья 2021 Mühendislik Fakültesi Polymer Bulletin79 ( 10 ) 96 Просмотры
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A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry

Mehmet KOBYA

Reverse osmosis concentrate (ROC) is one of the major drawbacks in membrane treatment technologies specifically due to the scale-forming ions. It is important to remove these ions from ROC to enhance total water recovery and reuse in the textile industry that is the largest water-consumer and polluter industry. In this work, coagulation/high pH precipitation (CP) integrated with ceramic microfiltration (CMF) was studied as a pretreatment method followed by nanofiltration (NF) to increase the efficiency of water recovery. To prevent organic fouling, ferric chloride (FeCl3) was applied at a conc ...Более

Статья 2021 Mühendislik Fakültesi Water Science & Technology84 ( 9 ) 32 Просмотры
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Improved water productivity in summer squash under water deficit with PGPR and synthetic methyl amine applications

Atilla DURSUN

Insufficient freshwater resources require the improvement of deficit irrigation with approaches that induced high yields by increasing the adaptation of plants to physiological and photosynthetic responses to water scarcity in the soil. The aim of this study is to evaluate water productivity applying combinations of three different plant growth promoting rhizobacteria-PGPR (Bacillus megaterium TV91C, Bacillus megaterium TV6D, Bacillus subtilis RK1900) with a synthetic methylamine molecule for summer squash (Cucurbita pepo L.) at four irrigation levels (full irrigation, and 15, 30 and 45% defic ...Более

Статья 2021 Ziraat Fakültesi Rhizosphere20 154 Просмотры
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RECOVERING OF INDIGO DYE FROM DENIM WASTEWATER WITH H2O2 IN THE PRESENCE OF KI CATALYST

Mustafa DOLAZ

Today, the textile industry, which is rapidly developing and growing in proportion to the human population, poses serious environmental and health problems in terms of waste. In the world, indigo dyes are widely used in the manufacturing of jeans fabrics especially in textile factories producing cotton fabrics. The overall objective of the present study is to recover indigo dye which is referred to as the pollutant released into the wastewater and to assess the removal of color via oxidation. For this purpose, denim wastewater containing solid particles and small size cotton fibers was filtere ...Более

Статья 2021 Mühendislik Fakültesi Environmental Engineering and Management Journal20 ( 9 ) 67 Просмотры
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Quantum size effect of cadmium-doped titanium dioxide photocatalysts towards methylene blue degradation and electrooxidation

Nahit AKTAŞ

At present, titanium dioxide supported cadmium catalysts were prepared at 0.5-5?admium loading by impregnation method. 0.5?d/TiO2 catalyst was characterized with scanning electron microscopy-energy dispersive X-ray (SEM-EDX), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Characterization results revealed that by cadmium doping to titanium dioxide, surface electronic properties and crystal structure of Cd/TiO2 catalysts changed as obtained from SEM-EDX, XRD, and XPS. Following this, methylene blue degradation and electrochemical oxidation measurements were examined under ...Более

Статья 2021 Mühendislik Fakültesi International Journal of Environmental Science and Technology (IJEST)19 ( 10 ) 55 Просмотры
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A case study performed in Kucukcekmece Lagoon channel/Istanbul, Turkey: how the heavy metal contamination and the seasonal variations on phytoplankton composition influence water quality

İbrahim İlker ÖZYİĞİT

In this work, the experiments related to seasonal variations of phytoplankton composition and heavy metal contamination along with some water quality parameters were carried out throughout the channel, serving as a waterway between Lake Kucukcekmece and the Sea of Marmara. Considered as a Class B wetland, the lake has been stayed within the metropolitan area of Istanbul overtime. The samples from the surface water were taken monthly by using Nansen bottles at 5 sampling sites through the period of March-November. After experimental procedures, a total of 46 taxa were recorded belonging to Baci ...Более

Статья 2021 Fen Fakültesi Desalination and Water Treatment239 100 Просмотры
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A Comparison of Various Ecological Indexes for Environmental Assessment of Vulnerable Mountain Ecosystems

Nurzat TOTUBAYEVA | Kanatbek KOCOBAYEV | Gülbübü KURMANBEKOVA | Ciyde TOKPAEVA

The aim of this work was to compare various ecological indexes to assess the state of urbanized ecosystems of the Issyk-Kul region in the Kyrgyz Republic. Soil samples were analyzed for Pb, Zn, Fe, Cu and Cd using AAS. Heavy metal contamination status was assessed using indexes for enrichment factor, geo accumulation, contamination factor, degree of contamination, pollution load, potential ecological risk and integrated risk using the Triad approach. Results show marked variations of heavy metal concentrations within the study area. The concentrations of heavy metals in soils of Issyk-Kul had ...Более

Статья 2020 Mühendislik Fakültesi Polish Journal of Environmental Studies29 ( 4 ) 97 Просмотры
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RK PROBABILISTIC HYDROGEOLOGICAL MAP

Kanatbek KOCOBAYEV

Hydrogeological maps are currently one of the most important elements of the image of the hydrogeological situation in both regional and local representation. In accordance with the existing instructions, they are compiled on the basis of t opographic, geological and tectonic maps of various scales based on the results of hydrogeological surveys and reflect the boundaries of the distribution of aquifers and complexes, confined, as a rule, to geological-stratigraphic and tectonic formations and their real manifestations on the ground (sources, wells, drilling wells). In addition to the General ...Более

Статья 2020 Mühendislik Fakültesi News of the National Academy of Sciences of the Republic of Kazakhstan-Series of Geology and Technical Sciences440 ( 2 ) 84 Просмотры
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Boron-containing magnetic nanoparticles from Co, Ni, and Fe chloride salts and their catalytic performances on 4-nitrophenol reduction

Nahit AKTAŞ

In this study, magnetic metal nanoparticles (MNP) were prepared by using Fe, Co and Ni ions and NaBH4 as reducing agents in oil-in-water microemulsion system. The prepared MNP were used as catalyst in 4-Nitro phenol (4-NP) reduction to 4-Aminophenol (4-AP). It was found that magnetic Co MNP performed superior catalytic performances than Fe and Ni MNP for 4-NP reduction. The catalytic reduction experiments revealed that as the concentration of reducing agent, NaBH4 that was used in the preparation of Co MNP was increased, the complete conversion time for 4-NP to 4-AP was decreased as the sizes ...Более

Статья 2020 Mühendislik Fakültesi Inorganic Chemistry Communications116 108 Просмотры
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Ammonia removal from wastewater by air stripping and recovery struvite and calcium sulphate precipitations from anesthetic gases manufacturing wastewater

Mehmet KOBYA

Anesthetic gas plant wastewater (AGPW) contains high concentrations of ammonia (NH3-N) and sulphate ions, which is known to results in severe environmental pollution in aquatic ecosystems without treatment. In the first stage of this study, a lab-scale investigation was done to improve removal of ammonia from AGPW by air stripping and struvite (or MAP: magnesium ammonium phosphate) precipitation processes, separately. The main operating parameters such as pH, air flow rate (L/min) and operating time were optimized for air stripping. The theoretical amount of removed ammonia via the air strippi ...Более

Статья 2020 Mühendislik Fakültesi Journal of Water Process Engineering38 115 Просмотры
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A novel highly sensitive carbon-based HMPD/GC sensor electrode: copper ions analysis in flour and water samples

Ali Osman SOLAK

In this research, (Z)-2-(2-(hydroxyimino)-2-(3-methyl-3-phenylcyclobutyl) ethyl)-3a,7a-dihy-dro-1H-isoindole-1,3(2H)-dione, HMPD molecule has been grafted to the glassy carbon (GC) electrode surface. The HMPD-modified GC electrode has been originally developed and it used for the quantitative determination of Cu(II) in flour and water samples. The modification steps have been performed using cyclic voltammetry (CV). CV, electrochemical impedance spectroscopy and scanning electron microscopy have been employed for the characterization processes. Cu(II) standard solutions changing from 1.0 x 10( ...Более

Статья 2018 Mühendislik Fakültesi Desalination and Water Treatment112 56 Просмотры
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High-performance carbon black electrode for oxygen reduction reaction and oxidation of atrazine by electro-Fenton process

Mehmet KOBYA

The aim of this study is to produce an electrode that can be used in H2O2 production and Electro-Fenton (EF) process by an effective, cheap, and easy method. For this reason, a superhydrophobic electrode with a higher PTFE ratio and high thickness was produced with a simple press. The produced electrode was used in the production of H2O2 and mineralization of Atrazine. First, the effect of pH, cathode voltage, and operation time on H2O2 production was evaluated. The maximum H2O2 concentration (409 mg/L), the highest current efficiency (99.80? and the lowest electrical energy consumption (3.16 ...Более

Статья 2021 Mühendislik Fakültesi Chemosphere287 ( 4 ) 100 Просмотры
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